{"slug":"sk-hynix-nasdaq-debut","qid":"spread_day1","label":"Debut-day quoted spread by hour: the seasoning process, hour zero","post_title":"SK Hynix's Nasdaq Debut, Measured","post_url":"/blog/sk-hynix-nasdaq-debut#q-spread_day1","columns":["et_hour","med_spread_bps","quote_updates","two_sided_updates"],"rows":[{"et_hour":11,"med_spread_bps":10,"quote_updates":97165,"two_sided_updates":96654},{"et_hour":12,"med_spread_bps":5.8,"quote_updates":89901,"two_sided_updates":89290},{"et_hour":13,"med_spread_bps":5.2,"quote_updates":46980,"two_sided_updates":46964},{"et_hour":14,"med_spread_bps":5.3,"quote_updates":43489,"two_sided_updates":43482},{"et_hour":15,"med_spread_bps":4.1,"quote_updates":49685,"two_sided_updates":49616}],"shape":"ranking","sql":"SELECT\n    toHour(toTimeZone(sip_timestamp, 'America/New_York')) AS et_hour,\n    round(quantileDeterministicIf(0.5)((toFloat64(ask_price) - toFloat64(bid_price)) / ((toFloat64(ask_price) + toFloat64(bid_price)) / 2) * 10000, toUInt64(toUnixTimestamp64Micro(sip_timestamp)), bid_price > 0 AND ask_price > bid_price), 1) AS med_spread_bps,\n    count() AS quote_updates,\n    countIf(bid_price > 0 AND ask_price > bid_price) AS two_sided_updates\nFROM global_markets.cache_stocks_quotes\nWHERE ticker = 'SKHYV'\n  AND sip_timestamp >= toDateTime64('2026-07-10 13:30:00', 9) AND sip_timestamp < toDateTime64('2026-07-10 20:00:00', 9)\n  AND (toHour(sip_timestamp) * 60 + toMinute(sip_timestamp)) BETWEEN 810 AND 1199\nGROUP BY et_hour\nHAVING countIf(bid_price > 0 AND ask_price > bid_price) > 0\nORDER BY et_hour","computed_at":"2026-07-26T06:13:15.698802+00:00","elapsed":0.202416461}